目前市面上用springboot和jsp开发的已经不多,因为jsp有加载的速度慢,每次启动工程重新编译等问题。springboot官网也不太推荐使用jsp,他们推荐使用静态模板,比如Thymeleaf等。但是目前还是有一部分老项目或者少部分公司采用此方式,我们简单了解一下。
首先我们将之前的集成springmvc的代码copy一份,稍作改造,pom依赖如下:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.6.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- JSTL (JSP standard Tag Library) JSP 标准标签库 -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
controller代码:
package com.example.springboot02.controller;
import com.example.springboot02.entity.User;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
/**
* Created by linjiaming
*/
@Controller
public class HelloController {
@Value("${boot.name}")
private String name;
@RequestMapping("/hello")
public String hello(Model md){
User user = new User();
user.setName(name);
user.setAge("18");
md.addAttribute("name",user.getName());
return "index";
}
}
接下来我们定义springmvc映射的配置
如下图所示,当前工程中并没有webapp相关的目录
我们可通过项目的结构图中,选择添加web模块,然后选择web模块部署的位置
确定之后,在web-inf下新建一个index.jsp
index.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
你好呀,${name}!
</body>
</html>
运行项目后结果如下:
若遇到访问不到jsp页面,可能是jsp页面没编译,pom文件下添加如下配置
<resources>
<resource>
<directory>src/main/webapp</directory>
<targetPath>META-INF/resources</targetPath>
<includes>**/*.*</includes>
</resource>
</resources>